URL의 IPv6 zone은 실수

IPv6 zone identifiers in URLs create a critical parsing conflict because the percent character (%) used in zone notation gets misinterpreted as invalid URL escape sequences in standards-compliant implementations like Go's net/url library. While RFC 6874 mandates percent-encoding (%25 for %), this edge case remains unresolved across browsers, web servers, and HTTP libraries, exposing deeper issues in URL syntax design when retrofitting modern networking requirements onto legacy standards.